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Environmental Initiatives

Initiatives in Manufacturing

CO2 reduction

Mazda promotes the efficient use of energy while aiming to reduce CO2 emissions in the area of manufacturing.


CO2 Emissions Reduced by 51.1% Compared with FY March 1991 Levels

The total CO2 emissions from Mazda's four principal domestic plants*1 (including R&D and other indirect areas) in FY March 2013 was reduced by 51.1% compared with FY March 1991 levels due to the following measures.

Key Measures in FY March 2013

  • Further Implementation of Monozukuri Innovation*2
  • Improvements in overall facility operating efficiency
  • Concentrating production and reducing losses from unnecessary work and equipment downtime

FY March 2013 Results (compared with FY March 1991)

  • Total CO2 emissions from Mazda's four principal domestic plants reduced by 51.1% (449,000tons - CO2)
  • Emissions per unit of sales revenue reduced by 50.8% (20.3 t-CO2/100 million yen)
  • *1Head Office (Hiroshima); Miyoshi Plant; Hofu Plant, Nishinoura District; Hofu Plant, Nakanoseki District
  • *2 For details, see the Annual report(pp.13,16,17)

CO2 Emissions from Mazda's Four Principal Domestic Facilities/CO2 Emissions per Unit of Sales Revenue
CO<sub>2</sub> Emissions from Mazda's Four Principal Domestic  Facilities/CO<sub>2</sub> Emissions per Unit of Sales Revenue

 

Energy Consumption Breakdown at Mazda's Four Principal Domestic Plants
Unit: (Thousands of GJ/year)
1990 2008 2009 2010 2011 2012
Electricity 4,461 6,117 5,546 5,952 5,593 5,401
Industrial steam 0 1,634 1,347 1,467 1,600 1,342
Coal 4,967 0 0 0 0 0
Coke 766 311 330 345 277 193
Fuel oil A 596 43 46 69 32 20
Fuel oil B 11 0 0 0 0 0
Fuel oil C 1,168 81 91 81 60 36
Gasoline 193 90 68 72 54 55
Kerosene 101 9 11 13 13 5
Diesel 81 34 30 33 41 37
LPG 989 51 44 50 91 44
City gas 0 1,405 1,338 1,409
1,235 1,066
Total 13,333 9,775 8,851 9,491 8,996 8,199
Energy Consumption Breakdown at Mazda's Four Principal Domestic Plants

Efforts toward Environmental Contributions through Monotsukuri Innovation

In line with its efforts to satisfy diverse customer needs and attract many customers by manufacturing vehicles that embody the "Sustainable Zoom-Zoom", Mazda is working to dramatically improve its business efficiency by increasing product development/manufacturing efficiency. At present, product development, manufacturing and purchasing devisions/departments are jointly working on "Monotsukuri innovation," sharing a completely new concept to offer diverse vehicle models to the market.

Through these efforts, Mazda has introduced various new models equipped with SKYACTIV TECHNOLOGY, which has resulted in substantial reduction of per-unit energy consumption in manufacturing processes. Specifically, the use of thinner parts, enabling reduced material weights and cycle time, and the modification of production methods, contributed to reduced energy consumption. Also, full introduction of the Aqua-Tech Paint System, a new water-based painting technology, has enabled elimination of the primer process, resulting in reduced energy use for air conditioners in painting booths.


Efforts for Energy-Saving Manufacturing

Improving the facility operation rate, shortening cycle time, and other measures are being taken to optimize the line process as well as the entire manufacturing process.

Also, losses in each step from production to consumption of energy are reanalyzed to further cut losses.

1. Cutting losses during energy production

Activities to minimize energy conversion losses in compressors, boilers, etc. that produce compressed air and steam are promoted.

2. Cutting losses during energy supply

Activities to prevent losses from pressure, heat release and electrical resistance are promoted to minimize energy losses while transporting compressed air, steam, electricity, etc.

3. Cutting losses during non-operating times

Energy consumption is reduced by suspending the power supply during breaks, between shifts, and before and after work hours when the facility is not operating. In addition, the power supply is frequently suspended during very short non-operating periods within work hours to further cut losses.

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